Add conv tests for a few ABM threaded methods

Author: Michele Mesiti

lib/OrdinaryDiffEqAdamsBashforthMoulton/test/abm_convergence_tests.jl

@@ -37,3 +37,21 @@ testTol = 0.2
     sim106 = test_convergence(dts, prob, VCABM5())
     @test sim106.𝒪est[:l2]≈5 atol=testTol
 end
+
+@testset "Explicit Solver Convergence Tests ($(["out-of-place", "in-place"][i])) - threaded " for i in 1:2
+    prob = (ODEProblemLibrary.prob_ode_linear,
+        ODEProblemLibrary.prob_ode_2Dlinear)[i]
+
+    sim5 = test_convergence(dts, prob, AB3(true))
+    @test sim5.𝒪est[:l2]≈3 atol=testTol
+    sim7 = test_convergence(dts, prob, AB4(true))
+    @test sim7.𝒪est[:l2]≈4 atol=testTol
+    sim9 = test_convergence(dts, prob, AB5(true))
+    @test sim9.𝒪est[:l2]≈5 atol=testTol
+    sim101 = test_convergence(dts, prob, VCAB3(true))
+    @test sim101.𝒪est[:l2]≈3 atol=testTol
+    sim103 = test_convergence(dts, prob, VCAB5(true))
+    @test sim103.𝒪est[:l2]≈5 atol=testTol
+    sim105 = test_convergence(dts, prob, VCABM4(true))
+    @test sim105.𝒪est[:l2]≈4 atol=testTol
+end